Physics M2 Hooke's Law Applications part 2
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Physics M2 Hooke's Law Applications part 2
- 1. Physics Module 2 Unit 1 Lessons 8 and 9 BEGINBEGIN
- 2. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Several forces act on a body at any given time. Do all bodies react to stretching and compression forces in the same manner? Can you imagine how amazed Robert Hooke would be if he was alive today, to see the numerous applications of his investigation! 2
- 3. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs At the end of this slide presentation, you should be able to : 1)Recall Hooke’s Law 2)Recall what is compression, tension and torsion 3)Identify and explain the numerous applications of Hooke’s Law in the following areas: a) How plastic materials are made stronger and its numerous applications. b) Structural designs 3
- 4. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Ply wood – ordinary wood is made more flexible by plying, alternate layers of wood and wood particles. 4
- 5. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Corrugated materials – some materials can be made more flexible by corrugation, where a sheet of material is folded into flutes and is sandwiched between two reinforcement layers held together by a strong adhesive. Packages when compressed, will crush and not shatter like wood. 5
- 6. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Use of composites - some brittle materials are made more flexible by combining with different materials in alternate layers held together by adhesives. 6
- 7. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Fuselage of aero planes – the use of composites reduces the weight of an aero-plane.The composites also increase the tensile strength to withstand the shearing forces encountered by the plane during flight. 7
- 8. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Composites are used in the flooring of this play area for children. It reduces the injuries of accident-prone small children. 8
- 9. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates is a good substitute to glass and is used in window treatments. 9
- 10. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates is used as wall panelling for buildings. For example Madrid’s social housing project building.The windows are also made from polycarbonates. 10
- 11. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates can be used as wall paneling and roofing for greenhouses. 11
- 12. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates serve as wall panelling for greenhouses. 12
- 13. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates is used as storefront glass as it has a high impact resistance and is useful in protecting goods from theft in a store. 13
- 14. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Wall partitioning – Used to divide a large room into smaller sections. 14
- 15. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates have been used in hockey arenas to protect patrons from flying pucks and brawling hockey athletes. 15
- 16. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates can be used as roofing to conserve energy, but also during earthquakes can withstand the tension cause by the seismic forces. Injuries due to shattered, flying glass pieces can become a thing of the past. 16
- 17. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates are increasingly used in solar panels in a number of devices as it is transparent, flexible and has a high impact resistance; 200 times that of glass. 17
- 18. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates are used to make solar panels and in the future used in the design of solar powered laptop computers.This application would improve the quality of communication after a major disaster where the supply of electricity is interrupted. 18
- 19. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs A matrix of metal and other materials is used as roofing material as it rigid but flexible and can withstand the torsion forces cause by hurricanes and tornadoes and compression forces of fallen trees on roofs. 19
- 20. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Composites -The external wall is reinforced by layers of different materials secured with a strong adhesive. During a tornado the wall will not break apart . 20
- 21. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs I – section steel beams. An I – section steel beam consist of a top plate and a bottom plate with a stringer in the middle.This makes the I – section beam stronger than a solid steel beam. 21
- 22. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Trusses - A truss is a structure composed of one or more triangles. It is used in the construction of framework of roofs and bridges as it can withstand tension very well. I – section steel beams and trusses are incorporated into structural design to prevent breaking /”snapping” during an earthquake. 22
- 23. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Trusses - trusses help to withstand compression and tension forces.The weight of the roof is evenly supported by the trusses. 23
- 24. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Modern homes have been made earthquake proof by the incorporation of reinforced concrete (composite)’ steel springs (alloys) and hollow concrete blocks (lightweight composite) to prevent injury if it comes lose during shaking. 24
- 25. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Modern homes have been made earthquake proof by the incorporation of reinforced concrete (composite)’ steel springs (alloys) and hollow concrete blocks (lightweight composite) to prevent injury if it comes lose during shaking. 25
- 26. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Many vehicles are damaged during hurricanes and tornadoes because of falling trees. Polycarbonates have a high impact resistance and will not break if a tree falls on it and vehicles remain function after the passage of the storm. 26
- 27. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs In the future, low cost housing could incorporate the use of I section beams, composites for wall partitions and flooring and use of polycarbonates for windows.This design makes housing affordable and provide protection from natural disasters. 27
- 28. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs The use of alloys reduces the weight of the car significantly, but increases the tensile strength making it possible to carry larger loads and can withstand the stress forces which cause it to twist and bend. 28
- 29. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs The use of alloys as in these steel alloy brake rotors increases the tensile strength and hardness.They do not wear away easily giving optimal performance over a longer lifespan. 29
- 30. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs The use of composites in the insulation and lining of the wine racks minimizes vibrations.The quantity and quality of the contents being transported are preserved.The vibration isolation mounts ensure optimal performance of beverage cooler and a longer lifespan. 30
- 31. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs The alloys used in the chassis and suspension springs work together to withstand torsion and vibrations caused by driving on rugged surfaces.The suspension springs ensure a comfortable ride for hours! 31
- 32. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Footwear – Several layers of composite materials, designed to absorb shock to feet from jogging or playing high impact sports, lessen knee and calf strain and provide comfort for long hours. 32
- 33. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Modern bedding systems are matrices of composite materials where persons can sleep peacefully with being disturbed by the other person constant turning during the night.The composite materials absorb the energy caused by moving in the bed , resulting in the other person being undisturbed. 33
- 34. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Are you ready to test yourself? There are seven multiple choice items that you are required to do. For each item, click on the letter of the correct response and then click the button ‘NEXT QUESTION’ to continue. You must be in Slide Show view to do the quiz. Click the BEGIN QUIZ button to proceed. 34 BEGIN QUIZ!BEGIN QUIZ!
- 35. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Cardboard cartons are preferred for packaging over wooden crates.What method is used to make cardboard stronger? 35 A. Mixing with compositesA. Mixing with composites B. PlyingB. Plying C. AlloyingC. Alloying D. CorrugationD. Corrugation FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 36. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 1: Cardboard cartons are preferred for packaging over wooden crates.What method is used to make cardboard stronger? Feedback A No. A composite consist of visible layers of different materials. B No. Plying is a method of alternate layers of wood and wood particles held together by adhesive. C No . Alloying is the mixing of a metal with other elements to produce a material with different physical and chemical properties. D Yes. Corrugation is the method where plies of fluted paper is glued between layers of paperboard. 36 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 37. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs What kind of material can be used to make bulletproof car windows? 37 A. Tempered glassA. Tempered glass D. CompositesD. Composites B. AcrylicB. Acrylic C. PolycarbonatesC. Polycarbonates FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 38. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 2:What kind of material can be used to make bulletproof car windows? Feedback A No;Tempered glass is suitable for high temperatures but is very brittle. B No; acrylic is tough, but very brittle. C Yes; polycarbonates are rigid , transparent and have higher impact resistance than glass. D No; most composites consist of layers of different material and is opaque. 38 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 39. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Modern homes are built to withstand earthquakes by incorporating several techniques. Name one of the methods 39 A. Solid concrete blocksA. Solid concrete blocks D. Flat zinc roofing sheetsD. Flat zinc roofing sheets B. Solid steel beamsB. Solid steel beams C. Hollow building blocksC. Hollow building blocks FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 40. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 3: Modern homes are built to withstand earthquakes by incorporating several techniques. Name one of the methods. Feedback A No; solid concrete blocks are low tensile strength and very brittle. B No; I section steel beams have greater tensile strength than ordinary steel beams. C Yes; Hollow concrete blocks are lighter and are reinforced with steel, so if pieces should fall during a quake, injury is minimal. D No; Flat zinc sheeting is less flexible and unable to withstand torsion caused by seismic energy. 40 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 41. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Polycarbonates serve as substitute for glass.This is because: 41 A. It has a lower impact resistance.A. It has a lower impact resistance. D. Its tensile strength is the same as that of glass.D. Its tensile strength is the same as that of glass. B. Its impact resistance is the same as that of glass. B. Its impact resistance is the same as that of glass. C. It has a higher impact resistance than glass.C. It has a higher impact resistance than glass. FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 42. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 4: Polycarbonates serve as substitute for glass. This is because: Feedback A No. It has a higher impact resistance than glass. B No. C Yes; the impact resistance is 200 times that of glass. D No. the tensile strength is greater than that of glass. 42 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 43. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Tennis rackets are filled with polyurethane foam to maximize performance of the racket.What is the function of polyurethane ? 43 A. The racket can deliver high speed serves. A. The racket can deliver high speed serves. D. Increases tensile strength of racket.D. Increases tensile strength of racket. C. Makes racket lightweight.C. Makes racket lightweight. B. Minimizes vibration of the racket.B. Minimizes vibration of the racket. FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 44. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 5: Tennis rackets are filled with polyurethane foam to maximize performance of the racket.What is the function of polyurethane ? Feedback A No; It is not relevant to question. B Yes; urethane has greater vibration property than rubber. C No; it makes the racket lightweight, but not relevant to answer. D No; it is relevant to the answer, urethane has great tensile strength which makes able to absorb vibrations. 44 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 45. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Floors of gyms and dance studios enhance performance of athletes and performers.What type of material is used? 45 A. PolycarbonatesA. Polycarbonates D. RubberD. Rubber C. Corrugated boardC. Corrugated board B. CompositesB. Composites FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 46. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 6: Floors of gyms and dance studios enhance performance of athletes and performers.What type of material is used? Feedback A No; Polycarbonates are flexible, but used mostly because of its transparency. B Yes; the floor is a matrix of carpet, plywood, foam and rubber sheeting which opposes impact forces of the feet. C No; corrugated board would crush and not offer much resistance to impact forces. D No; answer is partially correct. 46 NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
- 47. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs What is the purpose of the materials used on the floors of dance studios and gyms? 47 B. High impact activity for a longer time period.B. High impact activity for a longer time period. D. It is warmer than concrete floors.D. It is warmer than concrete floors. C. To attain maximum performance of dancers and athletes. C. To attain maximum performance of dancers and athletes. A. To minimize stress and injuries to bones and joints. A. To minimize stress and injuries to bones and joints. FEEDBACKFEEDBACKFEEDBACKFEEDBACK
- 48. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Question 7: What is the purpose of the materials used on the floors of dance studios and gyms? Feedback A Yes, the composite matrix arrangement of materials are flexible and bend under impact forces.The tension in the composites oppose the impact forces reducing stress on joints and bones. B No; the answer is as a result of the answer in A C No; the answer is as a result of the answer in A D No; the answer is a fact, but not relevant to the purpose. 48END OF QUIZEND OF QUIZEND OF QUIZEND OF QUIZ
- 49. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs You have reached the end of the quiz. If you wish to review this lesson, go to the first slide. If you have finished viewing the lesson, click the Close (X) button. 49
- 50. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Plywood http://www.winwood-products.com/images/okoume-plywood-combi-lge.jpg Corrugated cardboard http://www.howtomakeacardboard.com/images/p001_1_03.jpg composite support exterior wall http://www.shanquan-membrane.com/images/w-membrane31.jpg Honeycomb matrix composite http://3.bp.blogspot.com/_aR0-dm2zens/TPhssLEGyqI/AAAAAAAAAGs/S6Av3BH6twM/s1600/ho Roofing composite materials http://t3.gstatic.com/images?q=tbn:ANd9GcSfQHcoVdW2AgCB3GZhOdg_ykXQ3mvqLzHzHKR7 50
- 51. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs 787 aeroplane http://bintang.site11.com/Boeing_787/Boeing787_files/image342.gif Composite flooring for playarea http://li4kids.com/images/li4k303.jpg Glass greenhouse http://img.en.china.cn/0/0,0,218,50555,400,300,11b38fe3.jpg Window treatment http://www.doubleglazingquote.org.uk/admin/images/French_or_Double_Doors_81959.jpeg Madrid Social housing project http://static.dezeen.com/uploads/2009/10/dzn_123-Social-Green-Housing-in-Vallecas-Squ011.jpg polycarbonate wall panelling http://images.tradekool.com/126795400/Polycarbonate-Panel-Gutter-connected-Greenhouse.jpg Storefront glass http://img.archiexpo.com/images_ae/photo-m2/explosion-proof-laminated-glass-panelss-528549.jpg 51
- 52. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Wall partitioning http://www.solarinnovations.com/products/polycarbonate/structures/Images/PolyAp2.gif Solar laptop http://itechfuture.com/wp-content/uploads/2011/05/lucesolarpanelpoweredlaptoppc3.jpg Flexible solar panel http://www.jetsongreen.com/images/old/6a00d8341c67ce53ef0115714b0262970c-500wi.jpg Hockey arena protection shield http://www.totalplastics.com/assets/0000/1189/Acrylite-RinkShield_large.jpg Polycarbonate roofing material http://product-image.tradeindia.com/00356523/b/1/Polycarbonate-Roofing-Sheets.jpg Car shed http://www.bizrice.com/upload/20120130/Transparent_pet_sheet_instead_of_polycarbonate_ro ofing.jpg 52
- 53. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs I section beam http://3.bp.blogspot.com/- wp4RV7_DecI/T5CS0FFPjzI/AAAAAAAAAMM/VRPH3VOGVzQ/s0/steel-i-beam.jpg Trusses http://www.carols62.com/trusses.jpg Free body diagram of truss http://3.bp.blogspot.com/_28pukjwzqpY/TPwZiu8CCTI/AAAAAAAAAcw/rOkcJBU1E9I/s1600/Fre e%2BBody%2BDiagram.JPG Quakeproof house http://news.bbc.co.uk/olmedia/1780000/images/_1780053_earthquake_proof_300inf.gif Bus shelter http://images1.hellotrade.com/data2/OI/EJ/HELLOTD-1875724/2008113144543-250x250.jpg David coleman house on cover slide http://mocoloco.com/fresh2/assets_c/2011/09/zig_zag_house_by_david_coleman_architecture- 1-thumb-525xauto-31465.jpg 53
- 54. OBJECTIVESOBJECTIVES 1 Hooke’s Law applications Use of plastic materials 1 Hooke’s Law applications Use of plastic materials 3 Hooke’s Law applications Structural designs 3 Hooke’s Law applications Structural designs QUIZQUIZ INTRODUCTIONINTRODUCTION 2 Hooke’s Law applications Architectural designs 2 Hooke’s Law applications Architectural designs Steel alloy rotor http://www.uniqueautosports.com.au/pricelists/General/Skyline%20parts/33gtrdbarotors.jpg Car chassis http://www.cdxetextbook.com/images/chassis.jpg Sport utility vehicle http://www.google.com.jm/imgres? q=diagram+of+suspension+of+sports+utility+vehicle&hl=en&biw=1280&bih=666&tbm=isc h&tbnid=RP7lueiHKmVipM:&imgrefurl=http://www.automotiveillustrations.com/stock- images-car-suspensions.html&docid=LbNbaoaEgMFxnM&imgurl=http://ww Bedding http://www.flobeds.com/iprod/6097-highp7.jpg 54